The twelve pairs
of Cranial Nerves are nerves that exit from the bottom surface of
the brain. The Cranial Nerves serve the sense organs, muscles and
internal organs. The Cranial Nerves are represented with both
Roman and Arabic numerals or a name, for example Cranial Nerve
VI, CN VI, the 6th Cranial Nerve and Abducens Nerve all refer to
the same nerve. Cranial nerves III through XII arise in the
Brainstem.